Microsoft had warned earlier in July that customers who are using Windows 10 October 2019 Update (version 1809) and have default deferral settings will have their devices updated to the latest May 2019 Update.
This means that if you didn't change deferral settings (up to 365 days for the Pro, Enterprise, Education versions of the operating system), your machines will be upgraded to Windows 10 1903 and the process starts today, July 23.
The Windows maker issued a reminder that reads:
As a reminder to customers on Windows 10, version 1809 using Windows Update for Business with a Branch Readiness Level set to Semi-Annual Channel and a default 0-day deferral, your 60-day one-time built-in deferral period will end on Tuesday, July 23, 2019 and your devices will begin updating to Windows 10, version 1903.
More details are available over at the company's IT Pro blog. But, in short, if you aren't confident about the latest Windows 10 May 2019 Update, it would perhaps be better to defer it for a few weeks to avoid any installation surprises.
It should be noted that apart from minor bugs, this version of Windows 10 has managed to stay away from any damning problems that plagued the Windows 10 October 2018 Update. However, there are still a few small bugs that keep popping up and are yet to be resolved.
